Typewriting machine



y June 1,1926. 1,586,680 P A. G. F. KUROWSKI TYPEWRITING MACHINE Filed Feb. 14, 1923 ffomgy Patented June 1, 1926.

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.ALFRED G. F. KURO'WSKI, OF BROOKLYN, NEW YORK, ASSIGNOB TO UNDERWOOD TYPEWRITER COMPANY, OF YORK, N. Y., A CORPORATION OF DELAWARE.'

TYPEWRITING- MACHINE.

Application led February 14, 1923.

The present invention' relates to typewriting machines, and, more particularly, to means therein for preventing loosening of the screws by which the machine is anchored to a drop-leaf, or other base-board or support. p,

The object ofthe invention is the provision of detent-pieces, adapted to be set onto the frame of the machine, for engagement with flats, or the equivalent, on the anchoring screws, so as to prevent any loosening, rotary, movement of the screws after the latter are in homepositions.

It is a feature of the invention that it may consist, in its entirety, of a single piece of sheet-metal, formed inciie or more stamping or bending operations; and that, without requiring any attachments whatsoever, it may be quickly and easily set to and removed from the machine frame, and be made flexible to accommodate itself to inequalities in the castings or dimensions of the frame.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a view, in front elevation, of an Underwood standard typewriting yinachine in a 'sound-deadenino shoe; the inau l b chine and theV shoe being partly 1n cross f section to show the screws, and retaining means therefor, for securing the machine to the drop-leaf.

Figure 2 is a view, in side elevation, of

the structure shown in Figure 1; the side ofthe shoe being broken away to show one of the screws for holding the machine to the drop-leaf. i

Figure 3 is a erspectivo view of one of the screws or stub s for securing the machine tothe drop-leaf. j

Figure 4L is a perspective view of the spring-device 'for preventing the screw from loosening.

The Underwood standard typewriting machine comprises a platen. 10, mounted in a platen-frame 11, which is supported by a carriage 12, mounted for movement transverse of the machine, by means including a rear rail 13, on the main frame 14 of the machine. The frame la of the machine has side openings 15 and a back opening, not shown, and-ccn1prises yfront posts 16, rear nests 17, a forward or keyboard extension Serial No. 618,891.

To eliminate, in so far as possible, the noise produced in the operation of the niachine, the machine has been placed in a socalled slice 19, comprising a shell 2O of suitable material, preferably sheet-metal, having a thiol; soft lining 21 of sound-deadening material, such as felt, applied and secured to the shell in any suitable manner. The shell 2O may comprise a back wall 22, side walls 23, and a bottom or sole 24; these parts being secured together in any suitable manner. At its front edge the sole 24 is provided with an upstanding flange 25, having a portion of the lining 21 at its inner face. 1n order to protect the desk or dropdeaf on which the slice 19 is placed, rests or supports 27, preferably of rubber, are suitably secured to the bottoni or sole 2li of the shell.

The typewriter is provided with feet 26, preferably of rubber, at the lower ends of the posts 16 and 17, and the flange 25 is so positioned that, when the machine is placed in the shoe, the feet 26 at the 'front of the machine will rest just inside the lining at kthe rear of the flange.

for anchoring the machine to a drop-leaf or other support 31. The screws 30, one at each side of the machine, are passed vertically upward from below the drop-leaf, through openings 32 in the drop-leaf, through openings 33 in the sole of the shoe, and are threaded into the lugs 29. As the heads 34; of the screws are ofv service in holding the machine, only when the dropleaf is lowered, the heads may, as shcwii in Figure 1, be left spaced from the lower surface of the drop-leaf. To provide a broader holding surface for the headsl of the screws when the drop-leaf is lowered, washers 35 are preferably set over the screw-heads, between the same and the under face of the drop-leaf, and, as shown in Figure 1, these washers are spaced from the drop-leaf. The spacing of the heads of the screws and the washers from the drop-leaf is to prevent passage of sound waves therefrom to the drop-leaf, such as, in the operation of the machine, would cause the drcpfleaf, to act as a sounding board.y Further to insulate the retaining screws tiren; the drepdeaf, thek openings 32 through the drop-leaf are ot a size to prevent Contact ot the screws with the drop-leaf. Preferably further to assure lach of contact ofthe screws with the dropleaf, sleeves` 38 ot sound-,deadelning material, such as rubber, are slipped over those por! tions of the screws which pass through the drop-leaf. These sleeves, at their lower ends, may rest upon the washers 35 and hold the latter against movement. rll`he sleeves 36 may extend to the under surface ol' the sole of the shoe which contains the machine.` The openings 33 for the screws, through the sole oi the shoe, are also preferably ot a size to rprovide clearancev l'or the screws therethrough.

The following provision is made tor preventing turning or loosening oit the screws. As shown in Figure 3, the ends ot the screws above the lugs 29 are flattened on each side, as indicated at 37. Sheet-metal clips are set against the under faces or the lugs 2S). These clips have openings 39 therethrough in registration with the threaded openings in the lugs 29. rlhe openings 3f), however, are not threaded; and the screws are therefore movable freely with respect to the clips` 38. Each lclip 33 turned up, as at 40, alongside the corresponding lug and is offset laterally at 4l, over thecupper surface of the lug; so as to be interloehed with the latter against upward and downward displacement. The lateral offsets 4150i the clips are continuedin the 'form of upwardly-inelined spring-tongues 42,'bent, as at 43, to form detents adapted` to bear upon theopposing lats 37 oit-the screws. 'The detents 43 are of such width, and lthe spring pressure of the tongues 42 issuch, that the screws are held by the vclips against rotary movement when the detente are in engagement with the flats ojl thescrews.

The clips themselves are held. against angular displacement hy means ot ears 44 struck upward theretrom beyond the outerY faces of the side plates 23 of the main trame. The engagement ot the ears 44 with the side plates 28 prevents rotary movement of the clips. They side plates chine, with the lugs 29 thereon, are usually castings, andtherelforemay not he olf uniform size and shape. To assure easy placement of the clips '33, despite irregularities or lack of uniformity in the dimensions of the lugs and side plates, the distance between the ears 44 and the detent-carrying flange 40 et the clip may be such as to permit the lug and side plate, in any event, to be embraced between 'the' ears 44 and the fiange 40; and a bent or roundedlip l5 is formed between the ears 44. vThe lip 45, as shown in Figures l and 4, is bent npwardly, and inwardly beyond the plane of the inner liacesof the ears 44, and thence outwardly. Since the clips 33 are of. sheetoit the mametal, the lips will be resilient and will yield outwardly to accommodate the clip to the dimensions ot the lug and side plate ot' the machine. The upper, outer 'turn on the lip 4 5 allows the lip to be camined casi y over the edge of the side plate. vWhen the clip is in place, the pressure ol the lip on the side plate tends to prevent any angular movement of the clip and the ears atl; serve as positive stops to arrest almost iunnediately any angular movement et the clip which the pressure ct the clip :i5 might he insutlicient to prevent.

The clips being oit' sheet-material, thiy may he readily sprung onto and eti the li s 29 and side plates 23. Furthermore, the detent 43 will yield, when the screws are turned, to permit placement and acgufstment of the screws.

twill be noted that means is provided for securing to a base hoard .3l a tyi ing machine 13 having" cushion 'feet having a sound-deadening p 23, said pack includ. 2l, upon wuich said it'cet stand, including cushion feet 2?; ha; said means includes a headed screw 31- :i sul with a muil-tied shank 32, 33 Y up through a hole in the basehoard and fitting thereto, and passing up through an oversize hole in said sole, and at its upper end threaded to the typewriting nachine, causing saidv machine to conine said pacl; upon Vthe haseboard; that said screw insulated from said basehoard by. said muiied shank, and its head is spacerv from the bot tom of the basehoard (Figure 2), the screw being loose and having a shoulder 3?; and that means 43 upon the machine iframe and insulated from said huseboard engages the shoulder 37 oivthe screw and yields to'torcible rotation ol the screw, but hy means ot said shoulder locks the screw against accidental rotation, the yielding device heini: in the torni oic 'aspringy clip 33 to 45 which is self-clasping upon a lug or projection 29 in the machine into which the screw is threaded, and comprising a washer-portion 33 through which the screw passes, a claw 45 grasping the machine tramoworlr, and a linger 43 opposed to said claw and engaging said-shoulder. i

VariatiOnS may be resorted to within the scope of the invention, and portions ot the improvements may he. used withouty others.

Having thus described my invention, l claim:

l. In the art ot' typewriting machines, the combination oit a. typewriting machine having cushion feet, a sound-deadening pack including a sole or :floor upon which said cushion feet stand, cushion feet on the sound-deadening pack, a base-board, the feet on the pack standing on the hase-hoard, and means securing the typewriting machine, pack and base-board together, the means including headed screws passed upwardly through the bottom of the baseboard and through the sole and projected above the pack, sound-deadening washers and sleeves on the heads of the screws and between the screws .and baseboard, and the edges of the holes in the sole through which the screws are passed not touching the screws, and the upper ends of said screws screwed into the typewriting machine, whereby the machine, pack and base-board are secured together.

2. In the typewriting machine art, the combination of a typewriting machine having cushion feet, a sounddeadening pack having a sole or floor upon which said cushion feet stand, cushion feet on the pack, a base-board, the feet on the pack standing on the base-board, means securing the machine, pack and board together, the means including screws passed upwardly through the bottom of the base-board and sole, sound-deadening washers and sleeves on the heads and shanks of the screws and between the base-board and screws, and the edges of the holes in the sole through which the screws are passed not touching the screws, and the upper ends of the screws screwed into screw-threaded holes in the machines, the upper ends of the screws passed through the screw-threaded holes and projected beyond said holes in the machine and shouldered or flattened, and means upon the machine frame and insulated from the base-board, engaging the frame and fiattened ends of the screws, said last-mentioned means yielding to forcible rotation of the screws, but locking them against loose turnmg.

3. In the typewriting machine art, the combination of a typewriting machine having cushion feet, a sounddeadening pack having a sole or floor upon which the cushion feet stand, cushion feet on the pack standing on a base-board, means securing the machine, pack and base-board together, the means including threaded lugs on the frame ofthe machine, screws passed upwardly through the bottom of the baseboard an-d sole, sound-deadening washers and sleeves on the Shanks and heads of the screws and between the base-board and screws, the edges of the holes in the sole through which the screws are passed not touching the sole, the upper ends of the screws screwed into the lugs and projected above them, and the projecting ends being flattened or shouldered, and yielding spring clips encircling the'screws, one end of the clips engaging the frame of the machine whereby the clips are held against being turned, and the other end of the clips engaging the shouldered or iiattened ends of the screws, whereby the clips lock the screws against accidental turning, but yield against the screws to permit the screws to be forcibly turn-ed. l

ALFRED G. F. KUROWSKI. 

